Method of improving fault current measurement accuracy on electronic reclosure control

摘要

A method of improving fault current measurement accuracy on a power line is disclosed. A first sample is obtained from a first input channel. A current magnitude is calculated from the first sample. The current magnitude is compared to a possible current saturation value. If the current magnitude is less than the possible current saturation value, a second sample from a second input channel is obtained, and the current magnitude is recalculated from the second sample. Lastly, the current magnitude is scaled by a scale factor. Also disclosed is an apparatus for improving fault current measurement accuracy on electronic reclosure control.